Update workflow to trigger on all workflow files

Author: flit

.github/workflows/build-wheels.yml

@@ -6,7 +6,7 @@ name: Build wheels
 on:
   push:
     paths:
-      - '.github/workflows'
+      - '.github/workflows/**'
       - 'src/**'
       - 'setup.*'
       - 'pyproject.toml'